Update changelog

Author: lcharette

CHANGELOG.md

@@ -6,6 +6,7 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/)
 and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html).
 
 ## [5.1.6](https://github.com/userfrosting/sprinkle-admin/compare/5.1.5...5.1.6)
+- Add columns property to ActivitySprunje class. Fix so you can't download a users hashed password. ([#3]([https://github.com/userfrosting/sprinkle-admin/pull/3))
 - Update npm dependencies (@symfony/webpack-encore => ^5.1.0)
 
 ## [5.1.5](https://github.com/userfrosting/sprinkle-admin/compare/5.1.4...5.1.5)